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Optics Letters

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  • Vol. 28, Iss. 6 — Mar. 15, 2003
  • pp: 423–425

Enhanced nonlinear optical conversion from a periodically nanostructured metal film

Ajay Nahata, Richard A. Linke, T. Ishi, and K. Ohashi  »View Author Affiliations


Optics Letters, Vol. 28, Issue 6, pp. 423-425 (2003)
http://dx.doi.org/10.1364/OL.28.000423


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Abstract

We demonstrate an ~10<sup>4</sup> increase in conversion efficiency for optical second-harmonic generation (SHG) from a periodically nanostructured metal structure consisting of a single subwavelength aperture in a thin silver film surrounded by a set of concentric surface grooves. The forward-transmitted second-harmonic radiation from this structure is measured relative to that from an identical aperture with no surrounding surface periodicity. We explain the observed SHG enhancement quantitatively in terms of a measured 120× increase in the strength of the fundamental radiation in the vicinity of the aperture resulting from the periodic nanostructuring.

© 2003 Optical Society of America

OCIS Codes
(240.4350) Optics at surfaces : Nonlinear optics at surfaces
(240.6680) Optics at surfaces : Surface plasmons

Citation
Ajay Nahata, Richard A. Linke, T. Ishi, and K. Ohashi, "Enhanced nonlinear optical conversion from a periodically nanostructured metal film," Opt. Lett. 28, 423-425 (2003)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-28-6-423


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